374 Annals of the Carnegie Museum. 



sexes with a prominent longitudinal depressed line. Tegmina of 

 male almost, those of female about two-thirds, the length of the 

 abdomen. Wings lengthily caudate, fully twice the length of the 

 tegmina, pallid. Hind femora about normal, neither excessively 

 robust, nor noticeably slender. Hind tibiae armed with four movable 

 spines on each margin, these spines only moderately hirsute, the basal 

 ones rather small, the others gradually increasing in length. Ovi- 

 positor moderately robust, very gently upwardly curved, the superior 

 margin of its apex rather coarsely toothed. Cerci rather robust, in 

 the female about twice the length of the ovipositor. 



Color of head and pronotum black, tegmina and legs fuscous varied 

 with testaceous; the hind femora with two well-defined pallid spots 

 on their upper edge, underside pallid, the apical joints of the palpi 

 dirty white. 



Length of body, cf, 6 mm., 9, 7-75 mm.; of pronotum, cf, 9' 

 1.25 mm.; width of pronotum, cf, 2.3 mm., 9, 1-75 mm.; length of 

 tegmina, d^, 4.5 mm., 9 , 4 mm.; of wings, cf and 9 , 9 mm.; of hind 

 femora, cf and 9 , 4-15 mm.; of ovipositor 3 mm. 



Habitat. — The types, a male and a female, come from Santarem, 

 Brazil (H. H. Smith). They are the property of the Carnegie 

 Museum. 



Genus Hygronemobius Hebard. 



Hygronemobius Hebard, Ent. News, XXIV (1913), p. 451; Ent. News, XXVI 

 (1915), pp. 193-199, PI. VI. 



The representatives of this genus appear to be confined to the trop- 

 ical and subtropical portions of the Americas. Heretofore five species 

 have been recognized, and now a sixth is added. They dift'er from 

 representatives of the genus Nemobius as indicated by the generic 

 synopsis of the Nemobiidae given on a previous page. The six species 

 may be separated by the following key: 



Synopsis of the Species of Hygronemobius. 

 A. Size large (10 mm.). Tegmina of female about one-half the length of the 



abdomen; hind wings caudate. [Para] basalts Walker. 



A A. Size small or medium (7.5 mm. or less). Tegmina of female variable, but 

 generally minute, lateral; hind wings either wanting or caudate. 

 b. Form compact, head and pronotum stout, wings absent. 



c. Maxillary palpi dark. General color dark brown, maculate with a still 

 darker shade. 

 d. Dorso-intcrnal spur of the hind tibi;c equa'ling the metatarsus in 



